Spring-grip exerciser



'P. w. DODI). SPRING GRIP EXERCISER.

V APPLICATJON FILED MAY 21 1920- 1367343. Patented Feb. 1, 1921.

2 SHEETS-SHEET 2- PERCY 'WILERED DODD, OF STAFFORD, ENGLAND,

SPRING-GRIP EXERCISER.

Application filed May 21, 1920.

To dllwhom it may. concern Be it known that I, PERCY WILFRED Donn,

a subject of the Kingof England, residing at Stafford, England, haveinvented a new and useful Spring Grip Exerciser, of wh ch the followingis a specification.

My invention relates to spring grip dumb. bells or exerclsers forphysical culture exercises and refers to dumb-bells or exercisers formedin two parts or halves guided or hinged withtrespect to each other andwith a metal blade or bow spring or serles of removable blades orsprings interposed beimproved means of adjusting the resisting power ofthe bow or blade spring dumb bell or exerciser tocompression by the gripof .the hand .to suit different users, and to facilitate insertion andlocation of the springs therein. 1 The invention is applicable to ametal dumb-bell to provide weight in addition to the grip or to a lightgrip exerciser ofwood or other suitable substance, or the parts of thedumb-belloriexerciser may be formed as metal pressings.

In my invention, I employ for the springa number of spring leaves orplates adapted to nest together and having means for locating them inrelation to each other and to the rigid parts of the dumb-bell orexerciser.

For this purpose each spring leaf or plate has a depression on one sideforming a nib or projection on the other and one part of the dumb-bellor exerciser has a depression with an entrance groove leading to it tofacilitate insertion of the spring leaves. Beyond the depression in thedumb-bell part is a stop which may conveniently be formed as aprojecting lug or nib.

There may be more than one depression in the spring plates and in thedumbbell part if desired but I prefer one central depression whichcorresponds to the central part of each bow spring. a

In order that the invention may be easily understood I have illustratedtwo examples of construction in the appended drawings Figure 1 is anelevation of a dumb-bell with my invention applied.

Fig. 2 is a sectional view thereof.

Fig. 3 is a central cross section thereof.

Fig. 4 is a sectional plan showing the inner face of one part of thebell.

Specif cation of Letters Patent.

Patented Feb. 1.1921.

Serial No. 383,301.

Fig. 5 is metal bell. s

Fig. 6 is asimilar view of the other half. Fig. 7 is a central verticalsection of a pressed metal dumb-bell complete with spring. i

In the example shown at Figs. 1 to at the two parts a and b of thedumb-bell are solid and may be conveniently formed by castmg. Suitableguide pins are indicated at c. In my improvements the one half b has acentraldepression (land preferably a shallow groove 6 leading to it fromone side :Of the handle portion.v At the other side of this portionbeyond the depression. (Z is formed an abutment or stop f. r

a planof one half ofa pressed The main leaf or plate 9 of the spring is.

shown in the example ofsingle bowmform wlthslightly lipped ends it, andat its centralpartchas a pressed nib e adapted to be engaged in thedepression (5 in the half I) of the dumb-bell. The :lipped ends labearagainst the other half a of the dumb-bell andthe spring may bereadilypressedin be plates are employed but the lipped parts may be omitted,and if desired the other plates may be graduated in length like thelaminae of a laminated spring. Each leaf may be readily inserted belowthe main leaf and the nibs 11 nest together and engage the bell asclearly shown at Figs. 2 and 3.

A. light pressed metal constructiom as shown at Figs. 5 to 7 ma beproduced as two shell-like pressings. earing plates or platforms It atthe ends of one half a and a central plate or platform on on the otherhalf I) may be secured to the shells or formed as integral extensions ofthe blank from which each shell is pressed.

For the parts is the extensions may take approximately the formindicated in dotted lines at Fig. 6, assuming the dumb-bell halves tohave semi-hexagonal ends. The portion a may then be folded up verticallyto close the end of the bell and the part is folded again intohorizontal position to rest on the sides of the shell and form theplatform for the spring ends h to bear against.

The central extension for the platform on on the half 5 maybe as shownin dotted lines at Fig. 5 and may be folded over into the position shownin full lines. The depression d and groove 6 may be pressed in the .80tween the two halves by the .fingersof the.

extension and a stop f may be riveted or otherwise secured thereto orformed as a corrugation in the pressings.

3. A spring grip exerciser with a laminated spring between the partsthereof, a plurality of removable bow shaped leaves To guide thesepressed half bells I may comprising said spring, a depression in oneslot the platforms k as at 0 and insert the--faee of each leaf causing"a projection on cranked ends of guide pieces 12 therein and then raisethe "guides into vertical position and rivet or bolt them .to the otherhalf I) as shown at Fig. 7.

1. A spring grip exerciser comprising in combinationtwo rigid gripmembers, guiding and connecting means between said rigid members, and alaminated spring disposed between said rigid members tending to'separatesaid members to the limit of said connecting means, said springconsisting of removable leaves with means for nesting said leavestogether, and means comprising a recess and stop on one ofsaid rigidmembers lfpr locating saidspring readily in said memers. I

'2. .A spring grip exerciser comprising in combination rigid gripmembers, means for connecting said members said means permittingmovement between the members and guiding them during such movement, re-

:silient means interposed between said members, said resilient meansconsisting of a spring made up of removable leaves having coengagingprojections and recesses between them gr'alocating recess on one membera stop adjacent thereto and entrance means so that the "projections ofthe leaves may enter said recess in said member to locate the springbetween the members.

the opposite face, said epressions in the leaves being coincidentlyformed so that said leaves nest together, a corresponding recess in theinner face of one of said parts of the dumb-bell a projecting abutmenton one side of said recess and an entrance groove on the other side ofsaid recess.

4. A spring grip exerciser formed of two hollow pressings, rigidplatforms over the central part of one of said hollow pressings andrigid platforms over the end parts of the other; connecting and guidingmeans between said two pressings, and a leaf spring with removableleaves located between said pressings and engaging said rigid platforms.

5. A spring grip exerciser formed of two hollow pressings, a rigidplatform formed over the central part of one of said pressings, andrigid platforms over the end parts of the other of a depression with anentrance groove and an adjacent abutment on said central platform;connecting and guiding means between said pressings and a leaf springwith removable leaves between said pressings, said leaves havingcooperating recesses and projections to engage each other and to engagesaid central platforms, and one of said leaves having curled ends torest upon said end platforms.

PERCY WILFRED DODD.

